MODEL_NAME=Qwen/Qwen2.5-Coder-1.5B-Instruct FALLBACK_MODEL_NAME=Qwen/Qwen2.5-Coder-0.5B-Instruct FINAL_FALLBACK_MODEL_NAME=sshleifer/tiny-gpt2 EMBEDDING_MODEL=sentence-transformers/all-MiniLM-L6-v2 MAX_NEW_TOKENS=256 TEMPERATURE=0.2 TOP_P=0.95 USE_RAG=true FORCE_MOCK_MODE=false API_KEY=change-me RATE_LIMIT_PER_MINUTE=30